vo..xvni. (I) EXCURSION-BATH AND BOX 4i 



..One system ot gettin, th. stone Vre^^^t^^^ou^-^ ^ SSne^ 'n 

 this system i an inversion of the ^l^^^^^^^^'^^^; ^nd b eak, but bvuld- 

 many mines undercuts his coal that ^li^ "^^ss may tai a freestone 



in,-s^tones so workc.d would make a ^•f.;^';^;f,;^^i;'l\' ue^roof of the stone, 

 mfner or quarryman has to commence hsoper^^^^^^ ^^ ^^^ 



This picking operation ^^^^'^^^'tlnseltJas the work proceeds, and the men 

 heads of which longer handles aie 'f "^.^^^J^^'.^^'™, feet back into the rock, 

 thus make their driving a ^^f f"^'^,°/„7';J° g^ Sen l on the soundness of 

 The width or span ol these stalls '""f Vnl^.m worS^^ can without 



the rock. In the Monks Park and Cor ham -^^ ^^'^g J ^^^^^^^.f q,,arries, 

 danger be driven a width o ^5 to 30 fce^ in t e ^^^ ^^ ^ ._ 



where the rock is not so^°""^;^-l to .oTe '^ TW^is^of course, regulated 

 the drivings arc limited to from 2 to 20 "-*-^- dan^^er to the working 



by the space that may be -fc Y ope^^^^^^ T;'r;e^?5"-y is now called 



beneath -^'r If P!>°vinVr, blocks of required dimensions ; 



into exercise, for the cutting of «;^ ^^^^^^^o W°dc\of req^^ ^^ ^ ^^ 



£m!t;ersrS1e"Lrf:et%rarer;d1 broad deep at the head or 



Sawing out blocks in tlie underground quarry. 



extreme point, so as to ensure the saw sinMn, to ^ig wc^^^al. th^oi^. 

 The saw is worked in hrst ho^^o^ fj^y- f^'^h^e 'ne^^t natural parting, and the 

 and after the rock is thus oPf"" /l^^'^i^^; parent rock, levers are introduced 

 block thus separated lateral from the parent ^^^^ ^^^^^^ levers are 



into the bed or Pa^-t>"g ^^/^^^^^"Jg'^f'^rcU.ly d^ at the back It is 



weighted and shaken till the ^lock is lorc y ^^^^ ^^^ dressed 



thei' drawn down by ""^"^ P^rbiock shapeiy it is then placed on a trolley 

 with the axe, so as to make tl e Wock siiapeiy f ^i^^j. is removed 



and allowed to run to the loading plat om^-Alte ^^ ^^^^ ^^^^ 



it is evident that the ^o^^fXl^^J^*! t.eS of this'^to work the saw 

 of the bank of stone, and they avad th^n sme ^^ ^.^^^^ ^^ 



transversely, which, separating the block iromu ^^^^ ^^^^^ ^^ ^^^j^ 



ment, renders any further breaking oft ^^^^/^/^^-^y^^ ^ach face or heading of 

 face is the only stone broken from the rocK. 



